scholarly journals Multi-resonant absorptions in asymmetric step-shaped plasmonic metamaterials for versatile sensing application

2021 ◽  
Author(s):  
Li Yu ◽  
Yuzhang Liang ◽  
Huixuan Gao ◽  
Kaili Kuang ◽  
qiao Wang ◽  
...  
Keyword(s):  
Plasmonic Metamaterials ◽  
Sensing Application

Bimetal Au-Pd decorated hierarchical WO3 nanowire bundles for gas sensing application

2021 ◽  
Vol 334 ◽  
pp. 129584 ◽  
Author(s):  
Shah Zeb ◽  
Xiujing Peng ◽  
Yushu Shi ◽  
Jianhui Su ◽  
Junhua Sun ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Sensing Application

scholarly journals Group Velocity Modulation and Light Field Focusing of the Edge States in Chirped Valley Graphene Plasmonic Metamaterials

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1808
Author(s):  
Liqiang Zhuo ◽  
Huiru He ◽  
Ruimin Huang ◽  
Shaojian Su ◽  
Zhili Lin ◽  
...  
Keyword(s):  
Group Velocity ◽  
Light Field ◽  
Slow Light ◽  
Dielectric Materials ◽  
Degree Of Freedom ◽  
Geometrical Parameters ◽  
Edge States ◽  
Velocity Modulation ◽  
Plasmonic Metamaterials ◽  
On Chip

The valley degree of freedom, like the spin degree of freedom in spintronics, is regarded as a new information carrier, promoting the emerging valley photonics. Although there exist topologically protected valley edge states which are immune to optical backscattering caused by defects and sharp edges at the inverse valley Hall phase interfaces composed of ordinary optical dielectric materials, the dispersion and the frequency range of the edge states cannot be tuned once the geometrical parameters of the materials are determined. In this paper, we propose a chirped valley graphene plasmonic metamaterial waveguide composed of the valley graphene plasmonic metamaterials (VGPMs) with regularly varying chemical potentials while keeping the geometrical parameters constant. Due to the excellent tunability of graphene, the proposed waveguide supports group velocity modulation and zero group velocity of the edge states, where the light field of different frequencies focuses at different specific locations. The proposed structures may find significant applications in the fields of slow light, micro–nano-optics, topological plasmonics, and on-chip light manipulation.

Biocompatible peptide hydrogels with excellent antibacterial and catalytic properties for electrochemical sensing application

2021 ◽  
Vol 1154 ◽  
pp. 338295
Author(s):  
Wenqi Wang ◽  
Rui Han ◽  
Kai Tang ◽  
Shuju Zhao ◽  
Caifeng Ding ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Electrochemical Sensing ◽  
Sensing Application ◽  
Peptide Hydrogels
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